dB Decibel Meter & Sound Test

Noise bothering you at home or at work? Sonark shows you how loud it really is, keeps a record you can look back on, and turns it into a report you can share.

The live meter is free and unlimited: no account, no ads. Sonark Pro adds recording and saved sessions, the analyzer, noise dose, sound labeling, file import and report export.

MEASURE WITH CARE
• A, B, C and Z frequency weighting
• Fast (125 ms) and Slow (1 s) time weighting, plus Impulse (35 ms rise, 1.5 s decay)
• Live level, Leq, Lmin, Lmax and peak level
• L10, L50 and L90 percentile levels to summarize changing noise
• Everyday sound examples to put each reading in context

KEEP A RECORD (PRO)
A screenshot shows a moment; a report brings your recorded measurements together. Sonark turns a session into a timestamped PDF with the level chart, Leq, Lmax and the percentiles, the measurement conditions and calibration state, and the place when you choose to add it. Log a neighbor, a building site or a workplace over days or weeks and combine the sessions into one document.

FOR PEOPLE WHO WORK WITH SOUND (PRO)
• Spectrum analyzer with FFT up to 16,384 points, selectable windows, averaging and peak hold
• Spectrogram, and 1/1 and 1/3 octave RTA on IEC 61260 band centers
• NIOSH and OSHA noise dose estimates on A-weighted levels, kept separate and labeled
• External microphone calibration, with multiple saved profiles
• Import a voice memo, a recording or a video and measure its levels, statistics and sounds offline (levels are relative unless you enter a known reference offset)

ALSO IN THE BOX
A free Apple Watch app that measures on its own. With Pro: a widget summarizing today's saved measurements and estimated dose, a Live Activity while you record, optional Apple Health logging of saved sessions, and on-device sound labeling that marks an overnight session with the likely source of detected sounds — snoring, traffic, a door — without sending audio anywhere.

BEING STRAIGHT WITH YOU
Sonark displays a minimum of 30 dB; readings depend on the microphone, the device and calibration. Sonark implements A, C and Z frequency weighting and Fast and Slow time weighting as described in IEC 61672-1, but it is not a certified Class 1 or Class 2 sound level meter, and its dose figures are estimates, not a medical assessment.

SONARK PRO
Weekly, yearly or a one-time lifetime purchase. Where an introductory free trial is offered, the paywall shows it and the renewal price before you start.

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Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/